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This paper proposes a novel intelligent estimation algorithm in Wireless Sensor Network nodes location based on Free Search, which converts parameter estimation to on-line optimization of nonlinear function and estimates the coordinates of senor nodes using the Free Search optimization. Compared to the least-squares estimation algorithms, the localization accuracy has been increased significantly, which has been verified by the simulation results.

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Air conditioning (AC) system is a system with asynchronous and uncertain nature. In this paper, the method of fuzzy discrete event systems (FDES) is introduced to the research of AC energy-saving control. A fuzzy automaton modeling is given for AC energy-saving control and effectiveness optimization is made. To facilitate the implement of the control and energy saving, priorities have been assigned to the major control steps based on logical reasoning, forward-looking tree modeling based on FDES has been simplified to help further optimization, a simple and concrete example has been put forward illustrating energy-saving control in air conditioning system.

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